Kaiwaka River

{{Short description|River in New Zealand}}

{{Use New Zealand English|date=April 2024}}

{{Use dmy dates|date=July 2019}}

{{Infobox river

| name = Kaiwaka River

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| subdivision_type1 = Country

| subdivision_name1 = New Zealand

| length_km = 10

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The Kaiwaka River is a river of New Zealand's Northland Region. For much of its length, it is a broad arm of the Otamatea River, as much an inlet of the Kaipara Harbour as a true river.